Only ban wave I remember is the people that played Pokémon Sun and Moon early
And no you just say bullshit you can’t prove what you are saying
In that case just shut up
I remember 4 different banwaves on the 3DS. Might be more that I either forgot about or wasn't around for. There were a few before the Sun and Moon banwaves, and there was at least one that took place shortly after. Plenty of people who never took Sun and Moon online or had even played Sun and Moon got banned. To this day we are still unsure what exactly triggered these bans.
I absolutely can prove what I am saying. Nintendo actually gives consoles specific headers now for eShop games, making it much harder to pirate them compared to previous consoles. Cartridges have unique headers which are now game specific, which is an improvement to copy protection on their end. People have already been banned for invalid CDN requests. Individual cartridges are also being banned.
At this point, we don't know for sure what exactly will get you banned and what is safe. Again, the safe assumption is to assume for now that any form of CFW/piracy on the Switch can trigger a ban at any time. I certainly wouldn't put CFW on my main console after spending a few hundred dollars on the eShop. I'm not trying to get my NNID banned.
Go ahead and believe what you want... just don't come crying here for help when you get banned because you were impatient and didn't heed the warnings given to you.